315 



III. 5'/2 — 672 scales in L.tr. between anterior 

 rays of dorsal and lateral line. L.l. 82 — 91. 



D. 42 — 47. A. 25 — 28 0. viicropeltes p. 328. 



Doubtful species 0. piinctatus p. 330. 



I. Ophiocephalus marulioides Blkr. 



Ophioccphaltis marulioides Bleaker, Nat. Tijdschr. Ned. Indie II. 1 85 1, p. 424. — 

 Atl. iclith. IX. 1877, Tab. 399, fig. 2. — Verb. Akad. Amsterdam XIX. 1879, 

 Poissons pharyng. labyrinth, p. 40. 



M 



D.46-47; A. 30-31; P.18; V.6; L.1.55— 58; L.tr. I. 



10 



Cylindrical, compressed posteriorly. Height 6, 7.2 in length 

 with caudal. Head 3.1, 3.7 in length with caudal. Head depressed, 

 flat above, the profile sloping in a straight line from nape to 

 snout. Eye 6.5, 1.6 in interorbital space and about equal to 

 snout. Cleft of mouth somewhat oblique. Maxillary reaching 

 to behind eye. Jaws equal. A pluriserial band of small equal 

 teeth in the upper jaw. A A-shaped band of teeth on anterior 

 part of vomer, subcontinuous with the broader bands on the 

 palatines. A pluriserial band of small teeth near the symphysis 

 in the lower jaw, laterally tapering to one row of small teeth, 

 with which distant blunt caninoids are intermingled. 5 rows 

 of scales between eye and praeoperculum, 3 or 4 on operculum. 

 Lateral line with an abrupt curve downwards at the iS'h perfo- 

 rated scale. Dorsal beginning scarcely behind origin of pectorals, 

 and ending somewhat behind end of anal; its origin separated 

 by about 13 scales from snout. Origin of anal below 16'^ dorsal 

 ray. Pectorals about equal to postorbital part of head. Ventrals 

 originating behind origin of dorsal, equal to head without 

 snout. Dark brown, somewhat lighter below. Fins brownish 

 blue, ventrals dusky. A black white-edged ocellus at the upper 

 part of the base of the caudal. Length 270 mm. 



Habitat: Sumatra (Deli!, Djambi!); Banka; Biliton ; Bor- 

 neo (Sambas, Bankayan). 



In rivers and ponds. 



2. Ophiocephalus melanopterus Blkr. [Fig. 84, p. 31 3]. 



Ophiocephalus melanopterus Bleeker, Nat. Tijdschr. Ned. Indie IX. 1855, p. 420. — 

 Atl. ichth. IX. 1877, Tab. 398, fig. 2. — Verb. Akad. Amsterdam XIX. 1879, 

 Poissons pharyng. labyrinth, p. 41. 



